lkml.org 
[lkml]   [2009]   [Nov]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Date
    Subject[PATCH 63/86] pata_radisys: fix UDMA handling
    From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
    Subject: [PATCH] pata_radisys: fix UDMA handling

    Set correct bits to switch between UDMA2 and UDMA4.

    Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
    ---
    drivers/ata/pata_radisys.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    Index: b/drivers/ata/pata_radisys.c
    ===================================================================
    --- a/drivers/ata/pata_radisys.c
    +++ b/drivers/ata/pata_radisys.c
    @@ -139,9 +139,9 @@ static void radisys_set_dmamode (struct
    pci_read_config_byte(dev, 0x4A, &udma_mode);

    if (adev->xfer_mode == XFER_UDMA_2)
    - udma_mode &= ~ (1 << adev->devno);
    + udma_mode &= ~(2 << (adev->devno * 4));
    else /* UDMA 4 */
    - udma_mode |= (1 << adev->devno);
    + udma_mode |= (2 << (adev->devno * 4));

    pci_write_config_byte(dev, 0x4A, udma_mode);


    \
     
     \ /
      Last update: 2009-11-25 18:25    [W:4.290 / U:0.168 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site